Mechanical clamshell dredging, a technique that makes use of a bucket-shaped dredging software resembling a clamshell to scoop materials from the underside of a water physique, might be used within the south entrance of the Swinomish channel. USACE stated work will run 24 hours, six days per week with all in-water work to be accomplished no later than February 15, 2025.
Dredging will happen within the south entrance, the Gap-in-the Wall and Rainbow Bridge areas and the north entrance, to take away roughly 150,000 cubic yards (115,000 cubic metres) of amassed sediment. All materials will go to the Rosario Strait open-water disposal website.
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